WO2002026448A2 - Douille de retenue a geometrie variable - Google Patents

Douille de retenue a geometrie variable Download PDF

Info

Publication number
WO2002026448A2
WO2002026448A2 PCT/US2001/030493 US0130493W WO0226448A2 WO 2002026448 A2 WO2002026448 A2 WO 2002026448A2 US 0130493 W US0130493 W US 0130493W WO 0226448 A2 WO0226448 A2 WO 0226448A2
Authority
WO
WIPO (PCT)
Prior art keywords
drive
central axis
socket
regions
direction generally
Prior art date
Application number
PCT/US2001/030493
Other languages
English (en)
Other versions
WO2002026448A3 (fr
Inventor
Dean J. Iwinski
Marco Devecchis
Bert Kirvec
Kurt Sauer
Original Assignee
Snap-On Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Snap-On Technologies, Inc. filed Critical Snap-On Technologies, Inc.
Priority to CA002423293A priority Critical patent/CA2423293C/fr
Priority to EP01975572A priority patent/EP1320444B1/fr
Priority to AU2001294887A priority patent/AU2001294887A1/en
Priority to DE60140468T priority patent/DE60140468D1/de
Publication of WO2002026448A2 publication Critical patent/WO2002026448A2/fr
Publication of WO2002026448A3 publication Critical patent/WO2002026448A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
    • B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/06—Spanners; Wrenches with rigid jaws of socket type
    • B25B13/065—Spanners; Wrenches with rigid jaws of socket type characterised by the cross-section of the socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/919—Screw having driving contacts

Definitions

  • the following disclosure relates to devices having female sockets adaptable for matably receiving complementary shaped male members.
  • the following disclosure has particular application to apparatus and methods for retaining the male member in the female socket.
  • rotatably dnveable devices such as drive sockets for wrenches and socket-head threaded fasteners
  • a female socket recess adapted for receiving a complementary shaped male drive member.
  • a typical form of such a driveable device has a polygonal socket recess formed in one end of the device coaxially with the axis of rotation.
  • Various techniques have been used to facilitate retaining the driveable device on the associated driving tool or other drive member or, stated another way, to retain the driving tool or member in the socket recess.
  • a socket recess differs from a standard hexagonal shaped recess comprising alternating flats and corners by having built-up portions that extend between what would normally be adjacent flats of a standard hexagonal shaped recess. While perfectly adequate for some uses, this design tends to engage the corners of a nut, bolt, etc. and is not adaptable for situations where contact with the corners of the bolts is not desired. Additionally, the built up portions in this design only slope in one direction across the face of the flats, which only allows this design to achieve the maximum interference fit when the socket is turned in one of the clockwise and counter-clockwise directions, but not the other. Summary
  • One form of the disclosed retention socket device comprises a body having a 5 plurality of alternating drive regions and corner regions arranged about a central axis for cooperation to define a socket recess having an open outer end and an inner end. Each drive region can have a drive surface disposed thereon and confined thereto.
  • the disclosed retention socket device can have at least one drive surface that slopes toward the central axis in directions both generally parallel to and traverse to the central axis.
  • One form of the disclosed method of retaining and driving a drive member comprises inserting a drive member, comprising alternating flats and corners, in a body comprising alternating drive regions and corner regions.
  • the drive member can be releaseably retained in the body by frictionally engaging the flats of the drive member with at least two of the drive regions.
  • the drive member can be rotated by rotating the body in 5 one of the clockwise and counter-clockwise directions while preventing engagement of the corners of the drive member with the body.
  • FIG. 1 is a fragmentary perspective view of a first form of a female socket, the o female socket being a drive socket for a socket wrench;
  • FIG. 1A is a fragmentary top plan view of the female socket of FIG. 1;
  • FIG. 2 is a fragmentary perspective view of a second form of a female socket, the female socket being a drive socket for a socket wrench;
  • FIG. 2A is a fragmentary top plan view of the female socket of FIG. 2;
  • FIG. 3 is a fragmentary perspective view of a third form of a female socket, the 5 female socket being a drive socket for a socket wrench;
  • FIG. 3 A is a fragmentary top plan view of the female socket of FIG. 3;
  • FIG. 4 is a fragmentary perspective view of a fourth form of a female socket, the female socket being a drive socket for a socket wrench;
  • FIG. 4A is a fragmentary top plan view of the female socket of FIG. 4;
  • FIG. 5 is a fragmentary perspective view of a fifth form of a female socket, the female socket being a drive socket for a socket wrench;
  • FIG. 5 A is a fragmentary top plan view of the female socket of FIG. 5;
  • FIG. 6 is a fragmentary perspective view of a sixth form of a female socket, the female socket being a drive socket for a socket wrench; s FIG. 6 A is a fragmentary top plan view of the female socket of FIG. 6;
  • FIG. 7 is a fragmentary perspective view of a seventh form of a female socket, the female socket being a drive socket for a socket wrench;
  • FIG. 7 A is a fragmentary top plan view of the female socket of FIG. 7;
  • FIG. 8 is a top plan view of the female socket of FIG. 1 or FIG. 2 with a nut o inserted therein when the female socket is spun in the cloclcwise direction indicated by the arrow labeled C;
  • FIG. 9 is a top plan view of the female socket of FIG. 1 or FIG. 2 with a nut inserted therein when the female socket is spun in the counterclockwise direction indicated by the arrow labeled CC;
  • FIG. 10 is a fragmentary perspective view of an eighth form of a female socket, the female socket being a drive socket for a socket wrench;
  • FIG. 10A is a fragmentary top plan view of the female socket of FIG. 10;
  • FIG. 11 is a fragmentary side view of a first form of a male member, the male member being a driver for a socket wrench or the like; o FIG. 11 A is a fragmentary end view of the male member of FIG. 11; and
  • FIG. 12 is a fragmentary perspective view of a second form of a male member, the male member being a driver for a socket wrench or the like.
  • the drive socket 20 has a cylindrical body 21 with a cylindrical curved surface 22, an open outer end surface 24 and an back end (not shown).
  • the drive 5 socket 20 has a central rotational axis X extending through the centers of the open outer end surface 24 and the back end.
  • axis X is the axis of rotation of drive socket 20.
  • a socket recess 30 Formed axially in the open outer end surface 24 is a socket recess 30, which extends into the cylindrical body 21, terminating in an inner end surface 31 in the interior 0 of the socket.
  • the drive socket 20 is designed for use with a ratchet wrench (not shown) and includes a square drive hole (not shown) at the back end of drive socket 20.
  • the inner end surface 31 is generally located between the back end and some point offset from the open outer end surface 24.
  • the socket recess 30 has a generally polygonal shape at the open outer end thereof, 5 i.e., at the open outer end surface 24, the shape being generally hexagonal in the illustrated embodiments and including sides, such as drive regions 32, spaced apart by comer regions 33.
  • the drive socket 20 has a plurality of alternating drive regions 32 and corner regions 33 arranged about a central axis X for cooperation to define the socket recess 30.
  • Each of the illustrated comer regions 33 comprises a channel-shaped o flank relief formed between two drive regions. The reliefs prevent the comers of a drive member, such as fastener 34 (see FIGS. 8 and 9), from contacting the comer regions 33 of socket recess 30.
  • the comer regions 33 can also comprise differently shaped flank reliefs. In other cases, the comer regions 33 can even comprise normal comers when contacting the corners of a drive member is of less concern. 5
  • the drive region has one or more drive surfaces 35, 36, respectively extending from the drive regions 32 and sloping toward the central axis both generally parallel to the central axis X and generally traverse to the central axis X (see FIG. 1).
  • one or more drive surfaces 35, 36 slope toward the central axis X in a first direction generally parallel to the central axis, for example along the shortest route between the open outer o surface 24 and the inner end surface 31, and in a second direction generally traverse to the central axis, for example the shortest route between two edges 38 of drive region 32.
  • This sloping inward toward the central axis X determines the depth of insertion of the hex head bolt and thus the area of engagement between the hex head bolt 34 and the drive socket 20.
  • the slope is positive in a direction following the shortest route from the open outer surface 24 towards the inner end surface 31 and in one of the two directions that follow the shortest route between two edges 38 of the drive region 32.
  • the drive surfaces 35, 36 extend from the inner end surface 31 towards the open outer end surface 24 and also extend from a point adjacent one of corner regions 33 that borders one edge 38 of a drive region 32 and towards the other comer region 33 bordering the same drive region 32.
  • the size of the drive surfaces 35, 36 have been exaggerated in the drawings since, in some embodiments, they may be difficult to see with the naked eye.
  • the drive surface 35, 36 extend from the inner end surface 31 towards the open outer end surface 24, but can end before reaching the open outer end surface 24.
  • the drive surfaces 35, 36 can extend all the way to the top of the open outer end surface 24 (see FIGS. 2-5 and 7).
  • the drive surfaces 35, 36 can have any suitably shaped surfaces, including a planar surface 37 (see FIGS 1 A, 2A, 4 A, 5 A, 6 A and 10 A) or curved surface, such as a concave curved surface 39 (see FIGS 3A, 4A and 7A). It is thought that concave curved surface 39 might better accommodate irregularities and imperfections found in many drive members.
  • the concave curved surface 39 can be used to provide a greater distribution of stress created when the fastener 34 is wedged in socket recess 30 because the curved surface allows for a greater amount of surface contact between the fastener 34 and the drive regions 32.
  • the concave curved surface 39 connects the line contact with the comer contact, whereas the planar surface 37 has a smaller line contact that is separate from the contact at the corner channel.
  • one or more drive surfaces each comprise a clockwise drive surface 35 that has a positive slope from the left towards the right of the drive region 32.
  • one or more drive surfaces each comprise a counterclockwise drive surface 36 that has a negative slope from the left towards the right of the drive region 32.
  • the terms right and left refer to the right and left direction of a drive region when it is viewed as depicted in the only full drive region 32 that is shown in both FIGS. 1 and 1 A.
  • the drive socket 20 can have at least one drive region 32 that includes a clockwise drive surface 35 while at least one other drive region 35 includes a counterclockwise drive surface 36.
  • the drive regions 32 can include both a clockwise drive surface 35 and a counterclockwise drive surface 36.
  • the drive surfaces can meet at a point between the corner regions 33 that border the particular drive portion 32.
  • the drive surfaces 35 and 36 can form a peak 42 where the 5 opposite sloping drive surfaces meet.
  • the drive surfaces 35 and 36 can form a a plateau 43 (shown in FIGS. 6 and 6A).
  • plateau 43 need not be flat as depicted, plateau 43 can have any suitable shape and can even have a radius, for example a convex radius.
  • the drive socket 20 can have drive regions 0 32 that comprise only one type of the clockwise drive surfaces 35 and counterclockwise drive surfaces 36. If only one drive surface 35 or 36 is located on each drive region 32, it can be advantageous for the drive surface 35 or 36 to extend from a point adjacent the comer region 33 bordering one end of the drive region to a point adjacent the comer region bordering the other end of the drive region, as depicted in FIGS. 5 and 5 A. h other cases, 5 it can be advantageous for the drive surface 35 or 36 to extend from a point adjacent the corner region 33 bordering one end of the drive region to a point some distance the comer region bordering the other end of the drive region, as depicted in FIGS. 10 and 10 A.
  • the drive surface 35 or 36 can stop short of extending all the way between bordering comer regions 33 so that there is little, if any, friction causing the hex head bolt 34 to be retained o when the socket 20 is rotated in one direction.
  • FIGS. 10 and 10A can be used to have a larger amount of friction force from engagement when socket 20 is rotated in the clockwise direction to tighten hex head bolt 34 and a less amount of friction force from engagement when socket 20 is rotated in the counterclockwise direction.
  • This design can 5 allow hex head bolt 34 to more easily drop out of socket 20 when bolt 34 is loosened.
  • This design's centering and holding feature may even reduce unwanted vibration between bolt 34 and socket 20 that would be felt by users using an impact wrench.
  • the outline of drive surfaces 35, 36 can have any suitable shape, however substantially polygonal shaped outlines such as substantially triangular shaped outlines o (see FIGS. 1-5 and 10) and substantially rectangular shaped outlines (see FIGS. 4, 6 and 7) are illustrated.
  • the outlines of drive surface 35, 36 can both be substantially triangular (see FIGS. 1-3), both substantially rectangular (see FIGS. 6 and 7), or one can be triangular and the other rectangular (see FIG. 4).
  • the fastener 34 comprises alternating flats 44 and comers 46.
  • the comers 46 of the fastener 34 are, respectively, radially aligned with the comer regions 33 of the socket recess 30, there being a clearance space therebetween depending upon the manufacturing tolerances for the fastener 34 and the drive socket 20 and the presence or 0 absence of reliefs.
  • fastener 34 As the fastener 34 progresses axially into the socket recess 30, the flats 44 thereof will, respectively, frictionally engage at least two drive surfaces 35 or 36, each on different drive regions 32, producing a wedge fit which will serve to releaseably retain the fastener 34 in engagement in the drive socket 20. Additionally, fastener 34 can also be retained in drive socket 20 merely by being wedged between one or more peaks 42 or 5 plateaus 43, even if the drive socket 20 is not rotated in either direction.
  • each clockwise drive surface 35 that contacts fastener 34 will normally be larger when drive socket 20 rotates fastener 34 in the 5 cloclcwise direction (labeled C) than when drive socket 20 rotates fastener 34 in the counterclockwise direction (labeled CC).
  • the amount of surface area of each counterclockwise drive surface 35 that contacts the fastener 34 will normally be larger when drive socket 20 rotates fastener 34 in the counterclockwise direction than when drive socket 20 rotates fastener 34 in the clockwise direction.
  • clockwise and o counterclockwise directions are used in the ordinary sense when viewing the back end of the drive socket (opposite the open outer end surface 24). Therefore the directions are labeled as shown in FIGS. 8 and 9 because those views are of the open outer end surface 24.
  • the slope of the drive surfaces 35, 36 may vary within a range of angles. Various factors that are used to determine such range are described in U.S. patent no. 5,277,531, which is incorporated herein by reference.
  • the degree of the slope can be related to the broad range of fastener hex head tolerances. For example, the smaller the dimension 5 across the flats on the fastener, the deeper the point where it will engage in the socket, likewise the larger this dimension then the shallower the point where it will engage in the socket.
  • the slopes can be designed to compensate for the wide variations of fasteners dimensions and tolerances that a particular fastener driver would likely be used for. o Referring to FIGS.
  • a body in the nature of a male driver 20a such as a male driver on a socket wrench and the like.
  • the male driver 5 20a has a body 22a having an outer end surface 24a and an opposite end (not shown).
  • the male driver 20a has a central rotational axis Xa extending through the centers of the outer end surface 24a and the opposite end. In one form, axis Xa is the axis of rotation of male driver 20a.
  • male portion 30a Projecting from the body 22a is a male portion 30a, which begins at outer end o surface 24a and terminates in a back end surface 31a towards the rear of male portion 30a.
  • the back end surface 3 la is generally located between the outer end surface 24a and some point offset from the opposite end of male driver.
  • the male portion 30a has a generally polygonal shape at the outer end thereof, i.e., at the outer end surface 24a, the shape being generally square in the illustrated embodiment and including sides, such as drive regions 32a, spaced apart by comer regions 33 a.
  • the male driver 20a has a plurality of alternating drive 5 regions 32a and comer regions 33a arranged about a central axis Xa for cooperation to define the male portion 30a.
  • Each of the illustrated comer regions 33a comprises a beveled comer forming a relief between two drive regions 32a.
  • the reliefs prevent the comer portions 33a of male portion 30a, from contacting the interior comers of a standard square-shaped female opening that is used to couple a socket and a ratchet wrench.
  • the comer regions 33a can also comprise differently shaped reliefs. In other cases, the comer regions 33a can even comprise normal comers when contacting the interior comers of a female opening is of less concern.
  • the drive region has one or more drive surfaces 35a, 36a, respectively extending from the drive regions 32a and sloping away from the central axis both generally parallel s to the central axis Xa and generally traverse to the central axis Xa.
  • one or more drive surfaces 35 a, 36a slope away from the central axis in a first direction generally parallel to the central axis, for example along the shortest route between the outer end surface 24a and the back end surface 31a, and in a second direction generally traverse to the central axis, for example the shortest route between two edges 38a of drive region 32a.
  • This sloping outward away from the central axis Xa determines the depth of insertion of the male portion 30a into a female opening and thus the area of engagement between the male driver 20a and the female opening in a socket.
  • the slope is positive in a direction following the shortest route from the outer end surface 24a towards the back end surface 31a and in one of the two directions that follow the shortest route between two 5 edges 38a of the drive region 32a.
  • the drive surfaces 35a, 36a extend from the back end surface 31a towards the outer end surface 24a and also extend from a point adjacent one of comer regions 33a that borders one edge 38a of a drive region 32a and towards the other comer region 33a bordering the same drive region 32a.
  • the size of o the drive surfaces 35a, 36a have been exaggerated in the drawings since, in some embodiments, they may be difficult to see with the naked eye.
  • the drive surface 35a, 36a extend from the back end surface 31a towards the outer end surface 24a, but can end before reaching the outer end surface 24a.
  • the drive surfaces 35a, 36a can extend all the way to the top of the outer end surface 24a (not shown).
  • the drive surfaces 35a, 36a can have any suitably shaped surfaces, including a planar surface 37a (see FIG 11 A) or curved surface.
  • one or more drive surfaces each comprise a clockwise drive surface 35a that has a positive slope from the bottom towards the top of the drive region 32a.
  • one or more drive surfaces each comprise a counterclockwise drive surface 36a that has a negative slope from the bottom towards the top of the drive region 32a.
  • bottom and top refer to the bottom and top direction of a drive region when it is viewed as depicted in the only full drive region 32a that is shown in both FIGS. 11 and 11 A.
  • Drive surfaces 35a and 36a can be made with the same variations and combinations previously described for drive surfaces 35 and 36 of drive socket 20.
  • the operation of the male driver 20a is similar to that previously described for drive socket 20 except that the male driver 20a is inserted into a square female opening comprising alternating flats and comers and it is drive surfaces 35a or 36a that engage the flats of the female opening. Additionally, comer portions 33a can be beveled to prevent contact with the interior comers of the female opening.
  • FIGS. 1-12 While the device has been disclosed in FIGS. 1-12 as embodied in a drive socket 20 and male driver 20a, it will be appreciated that the principles are applicable to any rotatably driveable device, including those disclosed in U.S. patent no. 5,277,531 and can even be applied to the associate male portions of common hex-headed or square-headed nuts and bolts. While, devices that are substantial square-shaped or substantially hex- shaped are depicted, the principles are also applicable to other polygon-shaped devices and other appropriately shaped devices.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Brushes (AREA)
  • Prostheses (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne un dispositif qui comprend un corps (21) présentant plusieurs zones d'entraînement (32) et zones d'angle (33) alternées arrangées autour d'un axe central pour coopérer et délimiter un évidement de douille (30) muni d'une extrémité distale ouverte (24) et d'une extrémité intérieure (31). Chaque zone d'entraînement (32) présente une surface d'entraînement (35, 36) confinée à ladite zone. Au moins une surface d'entraînement (35, 36) descend en pente vers l'axe central, dans une première direction généralement parallèle à l'axe central, et dans une seconde direction généralement perpendiculaire à l'axe central.
PCT/US2001/030493 2000-09-27 2001-09-26 Douille de retenue a geometrie variable WO2002026448A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002423293A CA2423293C (fr) 2000-09-27 2001-09-26 Douille de retenue a geometrie variable
EP01975572A EP1320444B1 (fr) 2000-09-27 2001-09-26 Douille de retenue a geometrie variable
AU2001294887A AU2001294887A1 (en) 2000-09-27 2001-09-26 Retention socket geometry variations
DE60140468T DE60140468D1 (de) 2000-09-27 2001-09-26 Geometrische variationen einer haltenuss

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/672,228 US6626067B1 (en) 2000-09-27 2000-09-27 Retention socket geometry variations
US09/672,228 2000-09-27

Publications (2)

Publication Number Publication Date
WO2002026448A2 true WO2002026448A2 (fr) 2002-04-04
WO2002026448A3 WO2002026448A3 (fr) 2002-06-27

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ID=24697689

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/030493 WO2002026448A2 (fr) 2000-09-27 2001-09-26 Douille de retenue a geometrie variable

Country Status (7)

Country Link
US (1) US6626067B1 (fr)
EP (1) EP1320444B1 (fr)
AU (1) AU2001294887A1 (fr)
CA (1) CA2423293C (fr)
DE (1) DE60140468D1 (fr)
ES (1) ES2335971T3 (fr)
WO (1) WO2002026448A2 (fr)

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US8148471B2 (en) 2009-11-23 2012-04-03 3M Innovative Properties Company Acrylic pressure-sensitive adhesives with aziridinyl-epoxy crosslinking system
US8420214B2 (en) 2008-06-09 2013-04-16 3M Innovative Properties Company Acrylic pressure-sensitive adhesives with aziridine crosslinking agents
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WO2002026448A3 (fr) 2002-06-27
EP1320444B1 (fr) 2009-11-11
CA2423293C (fr) 2009-12-22
ES2335971T3 (es) 2010-04-07
AU2001294887A1 (en) 2002-04-08
DE60140468D1 (de) 2009-12-24
US6626067B1 (en) 2003-09-30
EP1320444A2 (fr) 2003-06-25

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